CN206775485U - A kind of RF Amplifier Module - Google Patents
A kind of RF Amplifier Module Download PDFInfo
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- CN206775485U CN206775485U CN201720405240.9U CN201720405240U CN206775485U CN 206775485 U CN206775485 U CN 206775485U CN 201720405240 U CN201720405240 U CN 201720405240U CN 206775485 U CN206775485 U CN 206775485U
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Abstract
It the utility model is related to a kind of RF Amplifier Module, including descending amplifying unit, up amplifying unit and the RF switch being connected between descending amplifying unit and up amplifying unit, the descending amplifying unit includes being used to carry out the radio frequency amplifying circuit of power amplification processing and output and for the input power to radio frequency amplifying circuit to the radiofrequency signal of downlink input, the auxiliary circuit that positive power output and reverse power output are detected, the up amplifying unit includes being used to carry out low noise enhanced processing and the low noise amplifier circuit exported to the radiofrequency signal of up-link input.Amplification efficiency of the present utility model is high, and has the good linearity, can meet the performance indications requirement of TD LTE base station systems, have relatively good application prospect.
Description
【Technical field】
Power amplifier technology is the utility model is related to, more particularly, to the RF Amplifier Module in a kind of TD-LTE system.
【Background technology】
With the rapid development of mobile communication, more and more higher is required to networking.In order to better meet user at a high speed
The Virtual network operators such as the demand of business, China Mobile and industry department are continued to increase to TD-LTE (Time Division Long
Term Evolution, timesharing Long Term Evolution) network construction.Wherein, TD-LTE station technologies play in networking
Important effect.Base station is a kind of form that public mobile communication base station is radio station, refers to cover in certain radio
In cover region, radio station is believed by the transceiving that information transmission is carried out between mobile switching center, with mobile telephone terminal.
TD-LTE base station equipments (eNodeB) can be divided into distributed base station equipment and integrated base station equipment.Wherein, radio frequency
Amplification module is the RF remote equipment (RRU) of TD-LTE distributed base station equipment or the important set of integrated base station radio-frequency front-end
Into part, the technical indicator of RF Amplifier Module determines TD-LTE base station system performances.Current existing RF Amplifier Module
Efficiency is low, can not meet the requirement of TD-LTE base station system performances.
【Utility model content】
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, there is provided a kind of RF Amplifier Module.
A kind of RF Amplifier Module provided by the utility model, including descending amplifying unit, up amplifying unit and company
The RF switch being connected between descending amplifying unit and up amplifying unit, the descending amplifying unit include being used for descending chain
The radiofrequency signal of road input carries out the radio frequency amplifying circuit of power amplification processing and output and for radio frequency amplifying circuit
The auxiliary circuit that input power, positive power output and reverse power output are detected, the up amplifying unit include using
Low noise enhanced processing and the low noise amplifier circuit exported are carried out in the radiofrequency signal inputted to up-link.
Further, the radio frequency amplifying circuit includes the isolator, the first voltage-controlled attenuator, the first numerical control being sequentially connected
Attenuator, the first amplifier, the second voltage-controlled attenuator, analog predistortion device, amplifier section, forward coupler and circulator, institute
Circulator is stated to be connected with the RF switch.
Further, the isolator is used to the radiofrequency signal of downlink input carrying out isolation and amplifier；Described first
Voltage-controlled attenuator is used to adjust the power level from the radiofrequency signal of isolator output with by the descending amplifying unit
Peak power output control is horizontal in rated output power；First numerical-control attenuator is used for according to the described first voltage-controlled decay
The radiofrequency signal of device output adjusts the gain of the radio frequency amplifying circuit；First amplifier is used to decline first numerical control
The radiofrequency signal for subtracting device output is linearly amplified to first order power level；Second voltage-controlled attenuator is used for according to described first
The radiofrequency signal of amplifier output carries out Temperature compensation for gain to the radio frequency amplifying circuit；The analog predistortion device is used for root
According to the radiofrequency signal of second voltage-controlled attenuator output and the feedback signal of forward coupler output to the amplification
Part carries out linearisation correction；The amplifier section is used to carry out power amplification by power requirement to the radiofrequency signal of input；Institute
State forward coupler to be used to the radiofrequency signal of input is coupled into three tunnel radiofrequency signals and exported respectively, three tunnel radiofrequency signal
In, first via radiofrequency signal is used to be output to the circulator, and the second tunnel radiofrequency signal is used to be output to institute as feedback signal
Analog predistortion device is stated, the 3rd tunnel radiofrequency signal is used to be output to the auxiliary circuit to carry out forward power detection；The ring
Shape device is used to receive the first via radiofrequency signal of the forward coupler output and is divided into two-way output, in the two-way output,
The radiofrequency signal of first via output is used to be output to external equipment, and the radiofrequency signal of the second tunnel output is used by the RF switch
In being output to the auxiliary circuit to carry out backward power detection.
Further, the amplifier section includes the second amplifier, the 3rd amplifier and the 4th amplifier being sequentially connected,
Second amplifier is connected with the analog predistortion device, and the 4th amplifier is connected with the forward coupler；It is described
Analog predistortion device is used for what is exported according to the radiofrequency signal and the forward coupler of second voltage-controlled attenuator output
Feedback signal carries out linearisation correction to second amplifier；Second amplifier is used for the radiofrequency signal of input is linear
It is amplified to second level power level；3rd amplifier is used to the radiofrequency signal of input being linearly amplified to third level power water
It is flat；4th amplifier is used for the power level that the radiofrequency signal of input is linearly amplified to requirement.
Further, the auxiliary circuit includes single-chip microcomputer, input demodulator probe, positive demodulator probe and reverse detection section
Point；Described input demodulator probe one end is connected between the isolator and first voltage-controlled attenuator, and the other end is connected to
The single-chip microcomputer, the detection of input power is carried out and by detection for sampling the energy of radiofrequency signal of isolator output
Power changes into voltage and is input to single-chip microcomputer；Described positive demodulator probe one end is connected with the forward coupler, the other end
The single-chip microcomputer is connected to, the 3rd tunnel radiofrequency signal for being exported to forward coupler carries out forward power detection and will detection
Power change into voltage and be input to single-chip microcomputer；Described reversely demodulator probe one end is connected with the RF switch, the other end
The single-chip microcomputer is connected to, it is anti-for coupling the energy progress of radiofrequency signal for the second tunnel output for sampling the circulator output
To power detection and the power of detection is changed into voltage and is input to single-chip microcomputer；The single-chip microcomputer is used for the input detection
The voltage of part input, the voltage of the positive demodulator probe input, the voltage point of the reversely demodulator probe input
Do not calculated and draw corresponding input power value, forward power value and backward power value.
Further, the auxiliary circuit also includes auto level control part, the increasing being connected respectively with the single-chip microcomputer
Beneficial temperature-compensating part, grid voltage temperature-compensating part, temperature detection part and current detecting part；The auto level control portion
Dividing includes first voltage-controlled attenuator；The Temperature compensation for gain part includes second voltage-controlled attenuator；The grid voltage
Temperature-compensating part is used to carry out temperature-compensating to the grid voltage of the radio frequency amplifying circuit；The temperature detection part is used for institute
The temperature for stating radio frequency amplifying circuit is detected；The current detecting part is used to carry out the electric current of the radio frequency amplifying circuit
Detection.
Further, the low noise amplifier circuit include be sequentially connected low-noise amplifier, gain amplifier, the 3rd
Voltage-controlled attenuator, wave filter and the second numerical-control attenuator, the low-noise amplifier are connected with the RF switch；The low noise
Acoustic amplifier is used to carry out low noise amplification to the radiofrequency signal of up-link input；The gain amplifier is used for the low noise
The radiofrequency signal of acoustic amplifier output carries out gain amplification；3rd voltage-controlled attenuator is used to adjust from the gain amplifier
The power level of the radiofrequency signal of output with by the peak power output of the up amplifying unit control in rated output power
It is horizontal；The wave filter is used to be filtered the radiofrequency signal of the 3rd voltage-controlled attenuator output；Second numerical control declines
Subtract the radiofrequency signal that device is used to export according to the wave filter to adjust the gain of the low noise amplifier circuit and export radio frequency letter
Number.
Further, the forward coupler includes first via output end, the second tunnel output end and the 3rd tunnel output end；Institute
State first via output end to be connected with the circulator, for exporting the first via radiofrequency signal；Second tunnel output end with
The analog predistortion device connection, for exporting second tunnel radiofrequency signal；The 3rd tunnel output end and the auxiliary electricity
Road connects, for exporting the 3rd tunnel radiofrequency signal to carry out forward power detection.
Further, the circulator includes the first output end and the second output end；First output end is used for institute
The radiofrequency signal for stating first via output is output to external equipment；Second output end is connected with the RF switch, for working as
The RF switch exports the radiofrequency signal of second tunnel output to the auxiliary circuit to carry out when being switched to descending time slot
Backward power detects.
Further, the Doherty structures of the 3rd amplifier and the 4th amplifier all to be made up of two power tubes
Amplifier.
Amplification efficiency of the present utility model is high, and has the good linearity, can meet the performance of TD-LTE base station systems
Index request, there is relatively good application prospect.
【Brief description of the drawings】
Fig. 1 is a kind of theory diagram of RF Amplifier Module provided by the utility model；
Fig. 2 is a kind of schematic diagram of RF Amplifier Module provided by the utility model；
Fig. 3 is that the radiofrequency signal that the radio frequency amplifying circuit of RF Amplifier Module shown in Fig. 1 inputs to downlink carries out work(
The schematic flow sheet of rate enhanced processing and the method exported；
Fig. 4 is input power of the auxiliary circuit to radio frequency amplifying circuit of RF Amplifier Module shown in Fig. 1, positive output work
The schematic flow sheet for the method that rate and reverse power output are detected；
Fig. 5 is that the radiofrequency signal that the low noise amplifier circuit of RF Amplifier Module shown in Fig. 1 inputs to up-link is carried out
The schematic flow sheet of low noise enhanced processing and the method exported.
【Embodiment】
The utility model will be further described with reference to the accompanying drawings and examples.
With reference to figure 1, a kind of RF Amplifier Module provided by the utility model, including descending amplifying unit, up amplification list
Member and the RF switch 80 being connected between descending amplifying unit and up amplifying unit.Descending amplifying unit has efficient
The features such as rate, High Linear, accurate control performance.Descending amplifying unit includes being used to carry out the radiofrequency signal of downlink input
The radio frequency amplifying circuit 10 and exported for the input power to radio frequency amplifying circuit 10, forward direction that power amplification is handled and exported
The auxiliary circuit 50 that power and reverse power output are detected.Up amplifying unit includes being used to penetrate up-link input
Frequency signal carries out low noise enhanced processing and the low noise amplifier circuit 90 exported.RF switch 80 be used for carry out descending time slot and
The switching of row time slot, so as to respectively the radiofrequency signal of downlink is carried out power amplification processing and export, up-link is penetrated
Frequency signal carries out low noise enhanced processing and exported.In the present embodiment, descending amplifying unit, up amplifying unit are needed on outside
Worked under the control of down-going synchronous control signal, with meet TD-LTE (Time Division Long Term Evolution,
Timesharing Long Term Evolution) synchronization effect.
Also there is descending amplifying unit power amplifier switch, power amplifier to cross the function such as work(alarm and the alarm of power amplifier excessively stream.Power amplifier switch
By controlling the grid voltage of radio frequency amplifying circuit 10, to realize the output of signal level.It is to pass through auxiliary that power amplifier, which crosses work(alarm,
Circuit 80 detects real output, and compared with threshold value, radio frequency amplifying circuit 10 is closed during more than threshold value, shows that work(was accused
It is alert.The alarm of power amplifier excessively stream is to detect real work electric current by auxiliary circuit 80, closes and penetrates compared with threshold value, during more than threshold value
Frequency amplifying circuit 10, display excessively stream alarm.
With reference to figure 2, radio frequency amplifying circuit 10 includes isolator 11, the first voltage-controlled attenuator 12, first number being sequentially connected
Control attenuator 13, the first amplifier 14, the second voltage-controlled attenuator 15, analog predistortion device 16, amplifier section, forward coupler 20
With circulator 21.Circulator 21 is connected with RF switch 80.
Isolator 11 is surface mounting component, centre frequency 1795MHz, insertion loss 0.73dB (decibel), isolation 10dB, volume
Determine power 2.5W, the radiofrequency signal for downlink to be inputted carries out isolation and amplifier.First voltage-controlled attenuator 12 is by two pressures
Attenuation diode composition is controlled, as a part for automatic level control circuit, gain-adjusted scope is more than 15dB, is adjusted for passing through
The power level for the radiofrequency signal that attenuation regulation exports from isolator 11 is saved with by the peak power output of descending amplifying unit
Control is horizontal in rated output power.First numerical-control attenuator 13 is High Linear, 5-bit RF digital step attenuators, is adjusted
Scope 31dB, stepping 1dB, for the increasing of the radiofrequency signal regulation radio frequency amplifying circuit 10 exported according to the first voltage-controlled attenuator 12
Benefit.First amplifier 14 is a gain amplifier, and frequency range is 50~4000MHz, and P1dB (1dB compression point) is
20.2dBm 1900MHz, gain are 22.2dB 1900MHz, and the radiofrequency signal for the first numerical-control attenuator 13 to be exported is linear
It is amplified to first order power level.Second voltage-controlled attenuator 15 is a voltage-controlled attenuation diode, as Temperature compensation for gain portion
The part divided, gain-adjusted scope are more than 10dB, for being amplified according to the radiofrequency signal that the first amplifier 14 exports to radio frequency
Circuit 10 carries out Temperature compensation for gain.The frequency range of analog predistortion device is 1500-2200MHz, and correct amount is more than 15dB, is used
In the feedback signal that the radiofrequency signal and forward coupler 20 exported according to the second voltage-controlled attenuator 15 exports to amplifier section
Linearisation correction is carried out, so that amplifier section carries out arized power amplification, makes power that there is the good linearity.Amplifier section
For the radiofrequency signal to input power amplification is carried out by power requirement.Forward coupler 20 is using microstrip coupled, for will be defeated
The radiofrequency signal entered is coupled into three tunnel radiofrequency signals and exported respectively, and in the radiofrequency signal of three tunnel, first via radiofrequency signal is used
In being output to circulator 21, the second tunnel radiofrequency signal is used to be output to analog predistortion device 16 as feedback signal, and the 3rd tunnel is penetrated
Frequency signal is used to be output to auxiliary circuit 50 to carry out forward power detection.Circulator 21 is using high mutual modulating materials, insertion loss
≤ 0.25dB, isolation >=25dB, standing-wave ratio≤1.15, rated power 150W, for receiving the output of forward coupler 20
First via radiofrequency signal is simultaneously divided into two-way output, and in the two-way output, the radiofrequency signal of first via output is outer for being output to
Portion's equipment, the radiofrequency signal of the second tunnel output are used to be output to auxiliary circuit 50 to carry out backward power by RF switch 80
Detection.
Forward coupler 20 includes first via output end, the second tunnel output end and the 3rd tunnel output end.First via output end
It is connected with circulator 21, for exporting first via radiofrequency signal.Second tunnel output end is connected with analog predistortion device 16, for defeated
Go out the second tunnel radiofrequency signal.3rd tunnel output end is connected with auxiliary circuit 50, for exporting the 3rd tunnel radiofrequency signal to carry out just
To power detection.
Circulator 21 includes the first output end and the second output end.First output end is used to believe the radio frequency of first via output
Number it is output to external equipment.Second output end is connected with RF switch 80, for when RF switch 80 is switched to descending time slot
The radiofrequency signal of the second tunnel output is exported to auxiliary circuit 50 to carry out backward power detection.
Amplifier section includes the second amplifier 17, the 3rd amplifier 18 and the 4th amplifier 19 being sequentially connected.Second puts
Big device 17 is gain amplifier, and frequency range is 400~2700MHz, and P1dB is 28.5dBm@1900MHz, and gain is
20.0dB 1900MHz, it is connected with analog predistortion device 16, for the radiofrequency signal of input to be linearly amplified into second level power
It is horizontal.3rd amplifier 18 is Doherty (Doherty) the structure amplifier being made up of two power tubes, is greatly improved and puts
Big efficiency, single tube peak power are 10W@1880MHz, and gain is 18dB@1880MHz, are powered using+28V, for that will input
Radiofrequency signal be linearly amplified to third level power level.4th amplifier 19 is that the Doherty being made up of two power tubes is tied
Structure amplifier, the efficiency of amplification can be equally increased substantially, single tube peak power is 125W@1880MHz, and gain is 20.2dB@
1880MHz, powered, be connected with forward coupler 20, for the radiofrequency signal of input to be linearly amplified into requirement using+28V
It is horizontal.The radiofrequency signal and forward coupler 20 that analog predistortion device 16 is used to be exported according to the second voltage-controlled attenuator 15 export
Feedback signal linearisation correction is carried out to the second amplifier 17 so that by the second amplifier 17 amplify radiofrequency signal have
The good linearity, improve the linear function of radiofrequency signal.
Auxiliary circuit 50 includes single-chip microcomputer 51, input demodulator probe 52, positive demodulator probe 53 and reverse demodulator probe 54.
It is to use peak detection pipe to input demodulator probe 52, and detection range is 40dB, and accuracy of detection is less than ± 2dB, one end be connected to every
From between the voltage-controlled attenuator 12 of device 11 and first, the other end is connected to single-chip microcomputer 51, for sampling the radio frequency of the output of isolator 11
The energy of signal carries out the detection of input power and the power of detection is changed into voltage being input to single-chip microcomputer 51.Positive detection
Part 53 is to use average detection tube, and detection range is greater than 40dB, and accuracy of detection is less than ± 1dB, one end and forward coupler
20 connections, the other end are connected to single-chip microcomputer 51, and the 3rd tunnel radiofrequency signal for being exported to forward coupler 20 carries out positive work(
Rate, which detects and the power of detection is changed into voltage, is input to single-chip microcomputer 51.Reverse demodulator probe 54 is to use peak detection
Pipe, detection range is 40dB, and accuracy of detection is less than ± 2dB, and one end is connected with RF switch 80, and the other end is connected to single-chip microcomputer
51, the energy of the radiofrequency signal of the second tunnel output exported for coupling sampling circulator 21 carries out backward power detection and will inspection
The power of survey changes into voltage and is input to single-chip microcomputer 51.Single-chip microcomputer 51 is to use microprocessor ATMEGA16L, is a use
8 low-power scms based on the enhanced risc architectures of AVR of CMOS technology production, for defeated to input demodulator probe 52
The voltage that voltage, the reverse demodulator probe 54 that voltage, the positive demodulator probe 53 entered inputs input is respectively calculated
And draw corresponding input power value, forward power value and backward power value.Single-chip microcomputer 51 is provided with logical with external device communication
Believe interface, the performance number that single-chip microcomputer 51 is calculated can be output to external equipment by communication interface.
Auxiliary circuit 50 also include be connected respectively with single-chip microcomputer auto level control part, Temperature compensation for gain part,
Grid voltage temperature-compensating part, temperature detection part and current detecting part.Auto level control part includes the first voltage-controlled decay
Device 12, the first voltage-controlled attenuator 12 are adjusted the increasing of radio frequency amplifying circuit 10 by the control of single-chip microcomputer 51 by adjusting attenuation
Benefit.Temperature compensation for gain part includes the second voltage-controlled attenuator 15, the second voltage-controlled attenuator 15 by single-chip microcomputer 51 control, to penetrating
Frequency amplifying circuit 10 carries out Temperature compensation for gain.Grid voltage temperature-compensating part is used to amplify electricity to radio frequency by the control of single-chip microcomputer 51
The grid voltage on road 10 carries out temperature-compensating.Temperature detection part is used for the temperature to radio frequency amplifying circuit 10 by the control of single-chip microcomputer 51
Detected.Current detecting part is used to detect the electric current of radio frequency amplifying circuit 10 by the control of single-chip microcomputer 51.
To radio frequency amplifying circuit 10 carry out Temperature compensation for gain realization principle be：By software design patterns, corresponding not equality of temperature
Section is spent, different voltage compensation values are set.When radio frequency amplifying circuit 10 is in some temperature, examined in real time by temperature detection part
The temperature of radio frequency amplifying circuit 10 is surveyed, single-chip microcomputer 51 exports corresponding voltage offset to the second voltage-controlled decay according to corresponding temperature section
Device 15, the second voltage-controlled attenuator 15 adjusts attenuation according to voltage compensation value, so as to realize the gain to radio frequency amplifying circuit 10
Temperature-compensating, so as to ensure the constant gain of the radio frequency amplifying circuit 10 under different temperatures.
Low-noise amplifier 91 that low noise amplifier circuit 90 includes being sequentially connected, gain amplifier the 92, the 3rd is voltage-controlled declines
Subtract device 93, the numerical-control attenuator 95 of wave filter 94 and second.Low-noise amplifier 91 is connected with RF switch 80.Low-noise amplifier
91 are used to carry out low noise amplification to the radiofrequency signal of up-link input.Gain amplifier 92 is used for defeated to low-noise amplifier 91
The radiofrequency signal gone out carries out gain amplification.3rd voltage-controlled attenuator 93 is used to adjust the radiofrequency signal exported from gain amplifier 92
Power level so that the control of the peak power output of up amplifying unit is horizontal in rated output power.Wave filter 94 be used for pair
The radiofrequency signal of 3rd voltage-controlled attenuator 93 output is filtered.Second numerical-control attenuator 95 is used for what is exported according to wave filter 94
The gain of radiofrequency signal regulation low noise amplifier circuit 90 simultaneously exports radiofrequency signal.
Amplification efficiency of the present utility model is high, and has the good linearity, can meet the performance of TD-LTE base station systems
Index request, there is relatively good application prospect.
Also with reference to Fig. 1, the utility model additionally provides a kind of amplification method of RF Amplifier Module.RF Amplifier Module
Opened including descending amplifying unit, up amplifying unit and the radio frequency that is connected between descending amplifying unit and up amplifying unit
80 are closed, descending amplifying unit includes radio frequency amplifying circuit 10 and auxiliary circuit 50, and up amplifying unit includes low noise amplification electricity
Road 90.This method comprises the following steps：
In the downlink, the radiofrequency signal inputted by radio frequency amplifying circuit 10 to downlink is carried out at power amplification
Manage and export.Input power, positive power output and reverse power output by auxiliary circuit 50 to radio frequency amplifying circuit 10
Detected.
In the uplink, the radiofrequency signal inputted by low noise amplifier circuit 90 to up-link carries out low noise amplification
Handle and export.
With reference to figure 3, the radiofrequency signal that radio frequency amplifying circuit 10 inputs to downlink carries out power amplification processing and exported
Method, comprise the following steps：
S1, the radiofrequency signal for being inputted downlink by isolator 11 carry out isolation and amplifier.
S2, the power level of the radiofrequency signal exported from isolator 11 adjusted with will be descending by the first voltage-controlled attenuator 12
The peak power output control of amplifying unit is horizontal in rated output power.
S3, the radiofrequency signal exported by the first numerical-control attenuator 13 according to the first voltage-controlled attenuator 12 adjust radio frequency and amplified
The gain of circuit 10.
S4, the radiofrequency signal that the first numerical-control attenuator 13 exports linearly is amplified to by first order work(by the first amplifier 14
Rate is horizontal.
S5, the radiofrequency signal exported by the second voltage-controlled attenuator 15 according to the first amplifier 14 are to radio frequency amplifying circuit 10
Carry out Temperature compensation for gain.
S6, the radiofrequency signal exported by analog predistortion device 16 according to the second voltage-controlled attenuator 15 and forward coupler
The feedback signal of 20 outputs carries out linearisation correction to the second amplifier 17.Specifically, the output of the second voltage-controlled attenuator 15 is penetrated
The feedback signal that frequency signal and forward coupler 20 export enters analog predistortion device 16, by computing, provides and the second amplification
The distortion of device 17 nonlinear properties output in opposite direction, then be output to the second amplifier 17 and carry out the linear of first order power level
Amplification, improve the linear function of radiofrequency signal so as to realize.
S7, the radiofrequency signal of input is linearly amplified to by second level power level by the second amplifier 17.
S8, the radiofrequency signal of input is linearly amplified to by third level power level by the 3rd amplifier 18.
S9, the power level that the radiofrequency signal of input is linearly amplified to by the 4th amplifier 19 requirement.
S10, the radiofrequency signal of input is coupled into by three tunnel radiofrequency signals by forward coupler 20 and exported respectively, it is described
In three tunnel radiofrequency signals, first via radiofrequency signal is output to circulator 21, and the second tunnel radiofrequency signal is output to as feedback signal
Analog predistortion device 16, the 3rd tunnel radiofrequency signal are output to auxiliary circuit 50 to carry out forward power detection.
S11, the first via radiofrequency signal exported by the reception forward coupler 20 of circulator 21 are simultaneously divided into two-way output, institute
State in two-way output, the radiofrequency signal of first via output is output to external equipment, and the radiofrequency signal of the second tunnel output passes through radio frequency
Switch 80 is output to auxiliary circuit 50 to carry out backward power detection.
With reference to figure 4, input power, positive power output and reverse output work of the auxiliary circuit 50 to radio frequency amplifying circuit 10
The method that rate is detected, comprises the following steps：
S51, the energy for the radiofrequency signal for sampling the output of isolator 11 by inputting demodulator probe 52 carry out input power
Detect and the power of detection is changed into voltage and be input to single-chip microcomputer 51, the voltage of input is counted by single-chip microcomputer 51
Calculate and draw corresponding input power value.
S52, the 3rd tunnel radiofrequency signal exported by positive demodulator probe 53 to forward coupler 20 carry out forward power
Detect and the power of detection is changed into voltage and be input to single-chip microcomputer 51, the voltage of input is counted by single-chip microcomputer 51
Calculate and draw corresponding forward power value.
S53, by reverse demodulator probe 54 when RF switch 80 is switched to descending time slot, coupling sampling circulator 21 it is defeated
The energy of the radiofrequency signal of the second tunnel output gone out carries out backward power detection and the power of detection is changed into voltage input
To single-chip microcomputer 51, the voltage of input is calculated by single-chip microcomputer 51 and draws corresponding backward power value.
With reference to figure 5, radiofrequency signal that low noise amplifier circuit 90 inputs to up-link carries out low noise enhanced processing and defeated
The method gone out, comprises the following steps：
S91, the radiofrequency signal inputted by low-noise amplifier 91 to up-link carry out low noise amplification.
S92, the radiofrequency signal exported by gain amplifier 92 to low-noise amplifier 91 carry out gain amplification.
S93, by the 3rd voltage-controlled attenuator 93 adjust from gain amplifier 92 export radiofrequency signal power level with
The peak power output control of up amplifying unit is horizontal in rated output power.
S94, the radiofrequency signal exported by wave filter 94 to the 3rd voltage-controlled attenuator 93 are filtered.
S95, the radiofrequency signal exported by the second numerical-control attenuator 95 according to wave filter 94 adjust low noise amplifier circuit
90 gain simultaneously exports radiofrequency signal.
Above example only expresses preferred embodiment of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model patent scope can not be interpreted as.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, such as to each implementation
Different characteristic in example is combined, and these belong to the scope of protection of the utility model.
Claims (10)
- A kind of 1. RF Amplifier Module, it is characterised in that：Including descending amplifying unit, up amplifying unit and it is connected to descending RF switch between amplifying unit and up amplifying unit, the descending amplifying unit include being used for downlink input Radiofrequency signal carry out power amplification processing and export radio frequency amplifying circuit and for the input power to radio frequency amplifying circuit, The auxiliary circuit that positive power output and reverse power output are detected, the up amplifying unit include being used for uplink The radiofrequency signal of road input carries out low noise enhanced processing and the low noise amplifier circuit exported.
- 2. RF Amplifier Module according to claim 1, it is characterised in that：The radio frequency amplifying circuit includes being sequentially connected Isolator, the first voltage-controlled attenuator, the first numerical-control attenuator, the first amplifier, the second voltage-controlled attenuator, analog predistortion Device, amplifier section, forward coupler and circulator, the circulator are connected with the RF switch.
- 3. RF Amplifier Module according to claim 2, it is characterised in that：The isolator is used to input downlink Radiofrequency signal carry out isolation and amplifier；First voltage-controlled attenuator is used to adjust from the radiofrequency signal of isolator output Power level is with horizontal in rated output power by the control of the peak power output of the descending amplifying unit；First numerical control The radiofrequency signal that attenuator is used to be exported according to first voltage-controlled attenuator adjusts the gain of the radio frequency amplifying circuit；It is described First amplifier is used to the radiofrequency signal of first numerical-control attenuator output being linearly amplified to first order power level；It is described Second voltage-controlled attenuator is used to carry out gain to the radio frequency amplifying circuit according to the radiofrequency signal that first amplifier exports Temperature-compensating；The analog predistortion device is used for the radiofrequency signal exported according to second voltage-controlled attenuator and the forward direction The feedback signal of coupler output carries out linearisation correction to the amplifier section；The amplifier section is used for the radio frequency to input Signal carries out power amplification by power requirement；The forward coupler is used to the radiofrequency signal of input being coupled into three road radio frequency letters Number and export respectively, in the radiofrequency signal of three tunnel, first via radiofrequency signal be used for be output to the circulator, the second road radio frequency Signal is used to be output to the analog predistortion device as feedback signal, and the 3rd tunnel radiofrequency signal is used to be output to the auxiliary electricity Road is to carry out forward power detection；The circulator is used to receive the first via radiofrequency signal of the forward coupler output and divided Exported into two-way, in the two-way output, the radiofrequency signal of first via output is used to be output to external equipment, the output of the second tunnel Radiofrequency signal is used to be output to the auxiliary circuit to carry out backward power detection by the RF switch.
- 4. RF Amplifier Module according to claim 3, it is characterised in that：The amplifier section includes the be sequentially connected Two amplifiers, the 3rd amplifier and the 4th amplifier, second amplifier are connected with the analog predistortion device, and the described 4th Amplifier is connected with the forward coupler；The analog predistortion device is used to be penetrated according to what second voltage-controlled attenuator exported Frequency signal and the feedback signal of forward coupler output carry out linearisation correction to second amplifier；Described second Amplifier is used to the radiofrequency signal of input being linearly amplified to second level power level；3rd amplifier is used for input Radiofrequency signal is linearly amplified to third level power level；4th amplifier is used to the radiofrequency signal of input being linearly amplified to It is required that power level.
- 5. RF Amplifier Module according to claim 3, it is characterised in that：The auxiliary circuit includes single-chip microcomputer, input Demodulator probe, positive demodulator probe and reverse demodulator probe；Described input demodulator probe one end is connected to the isolator and institute Between stating the first voltage-controlled attenuator, the other end is connected to the single-chip microcomputer, for sampling the radiofrequency signal of the isolator output Energy carry out the detection of input power and the power of detection is changed into voltage be input to single-chip microcomputer；The positive detection section Point one end is connected with the forward coupler, and the other end is connected to the single-chip microcomputer, for forward coupler is exported the 3rd Road radiofrequency signal carries out forward power detection and the power of detection is changed into voltage being input to single-chip microcomputer；The reverse detection Part one end is connected with the RF switch, and the other end is connected to the single-chip microcomputer, and the circulator output is sampled for coupling The energy of radiofrequency signal of the second tunnel output carry out backward power detection and the power of detection is changed into voltage be input to Single-chip microcomputer；The single-chip microcomputer is used for the voltage to the input demodulator probe input, the electricity of the positive demodulator probe input Pressure amount, the voltage of the reversely demodulator probe input are respectively calculated and draw corresponding input power value, forward power Value and backward power value.
- 6. RF Amplifier Module according to claim 5, it is characterised in that：The auxiliary circuit also include respectively with it is described Single-chip microcomputer connection auto level control part, Temperature compensation for gain part, grid voltage temperature-compensating part, temperature detection part and Current detecting part；The auto level control part includes first voltage-controlled attenuator；The Temperature compensation for gain part Including second voltage-controlled attenuator；The grid voltage temperature-compensating part is used to carry out temperature to the grid voltage of the radio frequency amplifying circuit Degree compensation；The temperature detection part is used to detect the temperature of the radio frequency amplifying circuit；The current detecting part For being detected to the electric current of the radio frequency amplifying circuit.
- 7. RF Amplifier Module according to claim 1, it is characterised in that：The low noise amplifier circuit includes connecting successively Low-noise amplifier, gain amplifier, the 3rd voltage-controlled attenuator, wave filter and the second numerical-control attenuator connect, the low noise Amplifier is connected with the RF switch；The low-noise amplifier is used to carry out low noise to the radiofrequency signal of up-link input Amplification；The gain amplifier is used to carry out gain amplification to the radiofrequency signal of low-noise amplifier output；Described 3rd Voltage-controlled attenuator is used to adjust the power level from the radiofrequency signal of gain amplifier output so that the up amplification is single The peak power output control of member is horizontal in rated output power；The wave filter is used to export the 3rd voltage-controlled attenuator Radiofrequency signal be filtered；Second numerical-control attenuator is used for according to the radiofrequency signal regulation that the wave filter exports The gain of low noise amplifier circuit simultaneously exports radiofrequency signal.
- 8. RF Amplifier Module according to claim 3, it is characterised in that：The forward coupler exports including the first via End, the second tunnel output end and the 3rd tunnel output end；The first via output end is connected with the circulator, for exporting described Radiofrequency signal all the way；Second tunnel output end is connected with the analog predistortion device, for exporting second road radio frequency letter Number；The 3rd tunnel output end is connected with the auxiliary circuit, for exporting the 3rd tunnel radiofrequency signal to carry out positive work( Rate detects.
- 9. RF Amplifier Module according to claim 3, it is characterised in that：The circulator includes the first output end and the Two output ends；First output end is used to the radiofrequency signal that the first via exports being output to external equipment；Described second Output end is connected with the RF switch, for exporting the second tunnel output when the RF switch is switched to descending time slot Radiofrequency signal to the auxiliary circuit to carry out backward power detection.
- 10. RF Amplifier Module according to claim 4, it is characterised in that：3rd amplifier and the 4th amplifier Doherty structure amplifiers all to be made up of two power tubes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720405240.9U CN206775485U (en) | 2017-04-18 | 2017-04-18 | A kind of RF Amplifier Module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720405240.9U CN206775485U (en) | 2017-04-18 | 2017-04-18 | A kind of RF Amplifier Module |
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| CN206775485U true CN206775485U (en) | 2017-12-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094029A (en) * | 2017-04-18 | 2017-08-25 | 深圳国人通信股份有限公司 | A kind of RF Amplifier Module and its amplification method |
| CN110161333A (en) * | 2019-05-23 | 2019-08-23 | 上海微小卫星工程中心 | Isolator reverse power withstand test system and method |
-
2017
- 2017-04-18 CN CN201720405240.9U patent/CN206775485U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094029A (en) * | 2017-04-18 | 2017-08-25 | 深圳国人通信股份有限公司 | A kind of RF Amplifier Module and its amplification method |
| CN110161333A (en) * | 2019-05-23 | 2019-08-23 | 上海微小卫星工程中心 | Isolator reverse power withstand test system and method |
| CN110161333B (en) * | 2019-05-23 | 2021-03-02 | 上海微小卫星工程中心 | Isolator reverse power withstand test system and method |
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